Post process volume translucency ray tracing issue

Hi there, i’m having an issue with ray tracing translucency on glass material, it’s the common automotive glass material

As you can see enabling ray tracing creates an opaque-like reflection of the skylight or hdri whatever is present

Disabling it allows to see inside the optics

it does even shows the environment if the mesh is occluded by objects

OFF

ON

Ray tracing project settings…

RHI = directx12

Why is this happening?